I started some initial work on assembly of the aft fuselage. After priming the tailwheel spring mount and assembled the mount, bottom skin and bulkheads with clecos. I checked the access hole for the tailwheel spring bolt and fount that I needed to do some filing to be able to get a socket to the nut. Once this was done I riveted the 712 bulkhead to the bottom skin. Then the mount was clecoed in and I began riveting the 711 bulkhead in.